Thread gauge and holder



Dec. 27, 1927. 1,654,233

.L BATH THREAD GAUGE AND HOLDER Filed May 29, 1926 Patented Dec. 27,1927.

LMJZ

UNITED STATES PATENT OFFICE.

JOHN BATH, OF WORCESTER, MASSACHUSETTS.

THREAD GAUGE AND HOLDER.

Application filed. May 2S), 1926. Serial No. 112,707.

the durzihility ol the gauge is douhled et very Slight inereziee in oostof niiniuliietnre` Another ohjeet is to provide ii construetion in whichthe gouge holder ie adapted to receive :t pair ol gz'nigee, one et eiiehend, hoth gauges being lirnily held, hut one or hoth of the gaugesbeingreadily reiniwzihle when desired.

lin the preferred forni of n'iy invention, l provide o. eonetrnetion inwhich two hordened thread gauges ere eliiinped against the ende of :irelatively Soft Slidahle plonger. lWhile more speeiliezilly described asL thread gamigo, certain features of iny invention :1re of 7:ilne ondutility when used for other types of gauges. y

My .invention further relates to errungeinents end combinations of partewhich will he hereinafter deeerihed and more particun linfly set forthin the appended elziinis.

llt preferred forni of the invention and Certain modifications thereofare shown in the drawings in which Fig. l is o. Sectional elevation ofiny iniproved gauge;

llig. 2 is :i eide elevation of one of the gamigo members;

Fig. Si :i eide elevation of the slidingr iilniiger;

lfig. :i inodilied forni of thread gauge, :Ldnplei'l for nee in inyimproved holder;

Fig. 5 is n further inodilieiition sl'iowing :i pini;` gauge or redadapted for use in iny hold er l is zi sectional View ofV u sleeve orgouge holder, showing a. modification;

Fig. 7' is on end View thereof; and

Fig. 8 shows a, thread gauge having a further Slight modification.

Referring to Figo. l, 2 and 3, I have shown the preferred form of niyimproved thread gouge and holder, in which zi thread gauge l0 is mountedin ezieh end of abody or holder having the :forni of :in internallythreaded sleeve ll. Each thread gauge 10 is preferuliily foi-ined with althreaded portion at ezieh end thereof and with :L rediieed intermediateportion 1Q; having flattened Side faces, or otherwiee constructed sothat zi suitable wrench or epetnner nlziy he i'ipplied thereto.

.The sleeve All is threinled for :i certain distance et eiieh endthereof :ind hina :i pileezig'e 123 eonneeling the llirezirledpoi-tiene` und loosely siipportiinr :i sliding;l plonger Ll, wliieh ispreferably of eol l or iopper or of Sonie other relatively .softinetzil. rlllie gauge nien'lhers l() on the other hand are preferablyolf lnirdened steel.

ln :isseinliling nly inqnfoifed gauge ond holder lor une, the ihrenil.gongee .l0 :ire

`sse.re\ive l into the omgoeite ende of the eleere il until the'Vliiinly eonlnet with the reizitively Soft sliding1 plunger li, whieh inengaged hy theirnier ende of the lnirdened nielnhere l0. Willen lhle;Iengaged, it is found that the Contanti; ol" lthe lnirdened endeinffiiees of the gouge nieinhere with. lthe relzi,l tively eeft end'lzieee of the plunger or rod lt canoes the ports to he lirnily eeeuredand to resist diepliieenient nineh more ell'eetirely than would he theeuse if the rod lei were also of hardened steel.

The outside of the :sleeve ll is preferably hexagonal or otherwisenon-eireiiler, (Fig. 7'), so that the gouge nien'ihere` l() muy hereadily removed therefrom hy applying :i Wrench or Spanner to the,grunge ineinhere sind il necessary un :idditioinil Wrench to the sleeve1l.

The lile of the threed einiges is prnetiezilly donhled hy il'orniini;Athe tn'o threinled end porlionel es; exact dnplientee, merelyrevereine)- eziifh ,innige nieniher in the holder when one end thereofheroines; worn helow etofnifhird eine.

The ooinhinotion ie oleo well milzipled for nee. ne it go und ilo-go,trainee hy nothing one of the threzu'led gsti'ige inenihere` l0 :i fewthonsiindtlis of :in ineh. Smaller thon the other, hut the differencebeing eo Slight that the smaller lenge will he :is lirinly held in theSleeve 1l :is it would here heen if of standard size.

1t is also sometimes deeirnhle to provide a. gouge with dilil'erentSizes of threads ot the opposite ends,l of the holder. This :ein heeeeon'iplished in one way hy providing :i gouge ineinher l5 (Fig. 1-with the enter end 1G formed of :i different size frein the inner endwhich lits the regulan' eleevo Il.

il li till lill) This outer end 16 may be either larger or smaller thanthe standard size.

The same result may be accomplished by providing a modifiedvform ofsleeve 17, as

indicated in Fig. 6 in which the threaded opening at one end of thesleeve is of a different size from that at the other end. This latterconstruction preserves the advantage of reversing the gauge members atboth ends thereofand is to that extent preferable over the use of gaugemembers of two sizes, as shown in Fig. 4.'

The sleeve 17 is also adapted for receiving gauge members of other typessuch as are indicatedin Fig. 5, in which the outer end 18 of the gaugemember 19 is cylindrical and is adapted for use as al plug gauge or forother gauging purposes. A simpler thread gauge member 20 (Fig. 8) maybemade as a continuous screw thread from end to end,

VWithout the intermediate reduced portion.

Such a gauge member can usually be reymoved by the han-ds or itnecessary may be held inr lead jaws.

Having thus described several forms of my invention, the advantagesthereof will be readily apparent. The thread gauge members themselvesare of small size and may be easily and cheaply manufactured.Furthermore each gauge member is provided with a gauging surface at eachend thereof and the gauge members may be readily reversed in the holderwhen they become worn, or in the event of accidental injury.

IIa-ving thus described my invention and the advantages thereof, I donot wish to be limited to the details herein disclosed, other- Wise thanas setforth in the claims, but what I claim is l. A gauge and holdercomprising an internally threaded sleeve, a plunger freely slidable insaid sleeve, and a pair ot gauge members threaded into said sleeve andabutting the ends ot said slidable plunger, said gauge members having'an intermediate portion of non-circular cross section to which a toolmay be applied Vfor turning said menr bers in said sleeve.

2. A gauge holder comprising an internally threaded sleeve, a plungerrcely slidable in said sleeve, and a pair ol gauge nicmbers threadedinto said sleeve and abutting the ends of said slidable plunger, saidsleeve having threads of the saine size at its two ends and said giiugemembers having threads i i of slightly7 dilerent diameter to provide a C77 go and no-go gauge.

In testimony whereot l have hereunto affixed my signature.

JOHN BATH.

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